<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<style type="text/css" media="screen">
		*{
			margin: 0;
			padding: 0;
		}
		a{
			margin: 100px;
			display: inline-block;
			height: 33px;
			/* 不能写宽度，推拉门 */
			background: url(images/ao.png) no-repeat;
			padding-left: 15px;
			color: #fff;
			text-decoration: none;
			line-height: 33px;
		}
		a span{
			display: inline-block;
			height: 33px;
			background: url(images/ao.png) no-repeat right: ;
			padding-right: 15px;
		}
	</style>
</head>
<body>
	<a href="#">
		<span>首页</span>
	</a>
	<a href="#">
		<span>产品中心</span>
	</a>

</body>
</html>